Spark-gap.



vJ. F. WING.

SPARK GAP.

APPLICATION. FILED SEPT. I,

ISIS.

Patentef Malz I8, IMQ,

j/me t fi nur eenen-GAP.

Speecnton ci Letters Patent.

\ lntented Mer. 11%. 31919..

Application tiled September 1, 1916. Serial No. 117,979.

To all 'wfwm it may conocen.'

Be it known that l, JOHN F. lliiivc, :i citizen ot the United States residing zit Maywood, in the county oi oook sind State of 'illinois1 have invented certain new and usetul improvements in Spark-Gaps, of which the. following* is a speeiention.

Myr invention relates to improvements in spark devices, and refers particularly to devices jfor intensifying'igniting spnrksor explosive engines.

Among the more salient objects ot the inveneion, :ire to lprovide a device that will greatly increase the strength of the spark;

to provide n device that will nt all times produce n spark in the engine cylinder in spite oi the that the spark plug may he defective; to provide e device that will have the minimum. of ports; to provide n device of ineteriul that will enable .in observer to see ii th spark is actually `present et any time; to `provide un improved method ot securing' the metal carp to the body of the dcvice; to provide :1. device that can be easily, quickly end securely nttnched to un ordinary spark plug et en explosive engine; to provide n device that is simple and one which cnn be cheeply inode; und, in general. to provide an improved device-ot the character speciiied.

in 'the accompanying drewing's,-

Figure 1 is i vie\v,sho\ving the device attzrched to en ordinary spark plug;

Fig. 2 is un enlarged central vertical scction of the device;

Fig. is n view ot the right hund end with the plug removed; und,

Fig. i is a View et' the glass bodyv part or barrel.-

leferring to the dra.vings,'ll n ling? mentnry part or" n cylinder heed. into which is placed :i spark plug` 12 ot any Well known nnike :Lind hziving e. thumb nut i3, by miens of which ay terminal clip is held on the spark plug. The above ports 4nre of well known construction, sind es they form no port ot the present invention, need no further dei @Crip-tion.v

The invention consists of a device indi cated generally at 14 in Fig. 1. it is mode np of e body portion r barrel of cest. gloss 15. The purpose 0I" this glass is not only to not es a perfect non-conductor, but it also permits the determining of Whether ythe spark in operation. The. barrel vhns a een tml opening 16 therethrough and here e. bulging side portion and enlarged end portions 17. This shape provides a neck portion i8 of slightly smaller diameter than the nnge and bulging portions. The inner edges of the end portions or flanges have small tri-vungulnr shaped indents 19. Thesezire spaced throughout the circumference ot the flange pnl-ts 1T und there nniy 'be any number of them.'

On the outer Afaces of these flanges at. either end are caps 2li. which are internally threaded centrally so ns to furnish nipples 21. The-se nipples nre integ` nl with the cap. At one. end oi the. glass barrel adjacent to the nipple opening' is n circumferential opening 22, in which is pl-nccd .i Washer or gasket 23 ot rubber or other eimilur material. Be.- iween the tnp und the flange portion of the barrel nl' either end is placed n paper or other nir tight, cushion lilhen the comi bined cup und nipple is placed on the ends ot' the glass barrel the ends 25 of caps 20 project slightly beyond the inner edges of the flanges 1T. The inet-nl ot the ends 25 of the cups is then crimped or bent inwardly until n suiiicient quantity oi the metal enters the indents 1S). This permanently scf-cures the cops in pince and effectunlly prevents the seid cups from beingrotated or removed from the, glass borrel.

Thi-ended into the nipple :it the left hand end, or spark `plug end of the device, is a plug 2G. This plug' has an enlarged flange 27 and :i termin-ul clip 28. rEhe innzge 27 is slightly larger in dimneter than the opening so'tlnit: when the compiressible gasket 2?), which is :L trifle thicker than the depth ot the. opening'` is placed' therein the lnnge must compress seid gasket. to permit the flange to sent itself on the' carp. At the other end o' the device there is provided a similar` plug` 29. The usuari `terrrlilml clipy 30 on the lend otl the high tension cable issecured between nuts 31 and 32. The outer nut must ho'loosenedto permit the removal of the clip 30. At the inner end of the plug 29 is provided n sparking' point 38, Which permits the u current to jump to plug 26 and then 00 the spark plug.

lFrom the foregoing description it will be evident, that the current from the magneto 'or spark coil lows through the terminal clip 30 to the plug 29 and to the sparking point 38,` thence to the pluig 26 and to the terminal clip 28. From the clip 28 it lows to that spark plug 12 and into the engine cylinder;

It. will 'be obvious that the details of construction may be varied more or less without departing from the scope of the invention, and l do not wish to be limited to the details of construction except as set forth in the broader of the appended claims.

What I claim is:

1. la a spark gap, a body portion ot' insulating material, caps at the ends ot' said body portion, said body portion having notches adapted to receive portions of the caps for securin f the caps against displacement, nipples orined integral with said caps, and terminal clips connected to said nipples.

2. n a spark gap apparatus, a body portion of insulating material, metal cap's adapted to be held on the ends of said bodyv o: tion. said caps having their inner ends ent inwardly, said body portion having notches into which the metal is forced, and, air tight cushions between said body portion A and said caps.

3. n.in a spark gap device, an insulating body portion, cup shaped caps for the ends of said body portion, the body portion having notches for receiving portions ot' the cap,

l nipples formed integral with said caps, terminal clip plugs adapted to be threaded in said nipples, and gaskets between said body portion and said caps and surrounding said nipples.

4. l'n'a device of the class described, a cylindrical body portion of glass, flanges formed at the ends of said body portion, notches ormedin the langes adjacent to said body portion, cup shaped caps for the anges of said body portion, said caps adapted to have a portion thereof bent into said notches'to hold the caps against displacement on said flanges, and sealing means between said caps and said body portion. i ,i

In a device of the `class described, a cylindrical body portion of insulatii'ig material, having notches formed in the ends thereof, caps having portions bent into said notches, integral nipplesin said caps, terminal members adapted to be secured in said nipples, paper washers between said body ),ortion and said ca is and a resilient orasltet disposed between one ot' said terminal members and one of said nipples.

6. In a device olI the class described, a cylindrical glass body part havingan opening therethrough, flange portions at either end of. said body part, indents beiner formed in said flange portions adjacent said body part,

said body part, and terminal plugs threaded i into the `nipples at either end, and terminal clips connected to said plugs.

. JOHN F. WNG.

.Witness:

W. H, REDFIELD. 

